Expansible spinner mechanism



April 15, 1941. a KOCH ETAL 2,238,330

EXPANSIBLE SPINNER MECHANISM Filed April 3, 1930 3 Sheefs-Sheet 1 lOl INVENTORS LYDIA B. KOCH BY qnvms F. MANDELL' g [M me/n6. ATTORNEY.

Patented Apr. 15, 1941 s PATENT OFFICE 1 EXPANSIBLE SPINNER MECHANISM Lydia B. Koch, New York, and Irving F. Mandell,.

Rochelle, N. Y.; said Mandell assignor tosaid Koch Application April 3', 1939,- Serial No. 265,832 9 Claims. (01. 92-3635) This invention relates to mechanism for spinning-by which term is meant deformation by pressure applied by rotative instrumentalitiesthe edges of container body shells of fibrous material, as paper, and more particularly for con- .tainers" having a, frustro-conical shape.

-. Although the present disclosure provides for curling th'e smaller end of the container body shell only, to form a reinforced lip, it is sufiiciently broad and comprehensive to cover the curling of a container body walland an included closure skirtyt o constitute a, tightly seamed joint at either the small or large end of a container.

' Heretofore, the curling of frustro-conicalcontainers has been accomplished by a plurality of spinning"; heads in order to provide for the constantly increasing diameter of the spun portion as the spinning operation advances from the edge of the container. 7 This condition has always resulted in a variable relation between the curl forming members and the edge undergoing curling, to the detriment of the spinning-action.

object'of this'invention is to provide an automatically "ergpandible spinning means whereby a single spinning device will operate in such manneras to'follow the angle of the taperof the containen'there'by maintaining a fixedrelation'of the curl forming members to the material being curled during the entire movement'of the spinning head, thus rendering it possible to obtain a closer curl than'has been done byprevious methods. I i

' Afurther feature is in the provision of improved means for controlling the compactness of the 'curlby the expansion of the curl forming members. I Other. aims and objects of a highly advantageous'nature will appear as the description proceeds, and are accomplished by the novel and practical construction and combination of parts hereinafter-described and illustrated in the accompanying drawings, constituting a material component of this disclosure, and'in which- Figure 1 is a side elevational view of a complete embodiment of the invention, showing a container on its mandrel. v

' Figure 2 is an end'view of the spinner head, looking on line 2-2 of Figure 1', and drawn-to an enlarged scale, the container'omitted.

Figure 3 is a transverse sectional view taken on line 3-3. of Figure 1, also drawn to 'anenlarged scale.-. IFigure' is a perspective view of one ofthe spinner elementsinfdetaili' Figure 5 is apartial side elevational, partial sectionalview, showing the operative mechanisnir'y" Y Figure 6 is a longitudinal sectional view, showing-the spinner elements as disposed during the initial stage of operation.

"Figure '7 is a similar sectional view showing thesarne elements in a further advanced posi-.

Figure 8 is a top plan view of the container mandrel and" associated operative parts.

Figure 9 isa longitudinal sectional view of the same with a; container shell in position on its.

mandrel.

,FigurelO is a similar view of the same parts, but=showing the shell as ejected.

Figure 1'1 is a fragmentary longitudinal sectional'view of the tapered'end of the mandrel, showing an alternative construction. "Referring indetail to the drawings, the numerar 20 designates in general the frame of the machine having fixed on its under side, near its rear lend, a bracket 2| carrying a, stud 22 on whichis journalled atwo-armed lever, its shorter a'rin- 23 havin'g at" its end a follower roll 24 engaging in the groove of a cam 25 having a single throwpf definite shape.

r-ne amus fixed'on a constantly driven shaft 26 by whi'chthe lever is actuated, its longer arm 2T' e1itending upwardly through an opening in the frame 20'. Another bracket 30 (see Figure 5), fixed on the uppersurface of the frame, is provided with side extensions 3|, finished parallel with the frameQto serve as guide rails for a slide 32 havmg.- at its 'rear a raised lug 33. "Pivotally' engaging the lug 33 is a fork 34, connected, by aright and left adjusting screw 35, with asimilar fork 36, pivoted, as at 31, to the lever arm'21.

- housing40, fixed on the slide 32, carries spacedanti fric'tion bearings 4| held by end plates 42 and provided with oil seals 43.

-. Mounted 'in'th'e'bearings 4| is a sleeve 44 havinglanf enlarged shouldered portion 45 intermediatev the bearings; the rear reduced portion of the sleeve has secured to it a pulley 45, held byla nut 41 and'drivenby a belt 48 at a high rate of .speed by any convenient means, as a motor, not shown.

Theforward end of the sleeve 44 (see Figure 6) ,;has--fixed upon'it a spiderill held by a clamp nut-5 lythis spider beingplurally recessed radially, asilateydescribed. 4

A spindle 55, is keyed at 54 to slide in the sleeve 44 and is journalled at its reduced rear end, in an anti-friction bearing 56, which is held in position thereon by a nut 51, and mounted in a housing 58.

The housing 58 is provided with two opposed radial pins 59 on which are pivoted the ends 60 of a clevis connection made in two equal half sections, for the purpose of assembly, held together as by a bolt BI and dowels 62; the opposite end of the connection link presents similar forks 63, pivotally engaged by a pin 64 passing through the extreme end of the lever 21, which thus imparts a differential movement to the spindle 55 and slide 32 respectively.

The spindle 55 has at its front end a reduced diametral portion on which is secured a spinner head provided with a plurality of segmental face flanges H and ledges 12, the latter having small curved fillets at their junction with the head, and are bevelled inwardly towards the axis at their front surfaces for clearance.

Intermediate the flanges H are recesses 14 having at each side lateral lugs 15 in which are fixed pivot pins 16 for movable curl forming members 30, substantially right angular in shape and having in their forwardly extending portions, arcuately curved transverse grooves 8|, their edges smoothly rounded, as indicated in Figure 4; these grooves act, upon contact with the container edge, to closely curl the edge inwardly, in co-operation with the flanges H and ledges 12 at the initial stage of operation.

The curl forming members 80 have radially extending pairs of lugs 82, in the spaces 83 between which are freely pivoted, on pins 84, the outer ends of links 85, pivotally connected by pins 85 within the recesses 81 of the spider 50.

An anti-friction thrust bearing 90, having a stud 92 set in its inner portion, is set firmly in the outer end of the head 10, within a cup 9|, axially with respect to the spindle 55, the purpose of which will later appear.

The lever 21, which by its swinging action and because of the differential radial position of pins 31 and 64, with respect to the pivot point 22, imparts a differential movement to both the spindle and sleeve 44, the spindle moving relatively further than the sleeve as may be seen in Figures 1 and 6. The difference in this motion accomplishes relative movement between the spider 50 and spinning head 10 so that by action of the connections 85, outward movement of curl forming elements 80, is accomplished during the forward motion of the spinning device and reversely during the rearward motion. This outward motion of the curl forming elements follows substantially the angle of the taper of the conical container body.

The support mandrel for the container may be one of a series carried by some form of a turretlike structure, or other device for receiving and discharging the paper body shells, and for holding them firmly when operated upon.

A preferred type of device is indicated in Figures 1, 6, '7 and more comprehensively in Figures 8 to 11. inclusive, which will now be described.

A rear support I00, which may be part of a turret or like mechanism, and a similar front support I SI, constitute the foundation of the container mandrel operating device; these supports are rigidly connected, in spaced relation, by a pair of bars I02, dowelled and held by screws thereto at their ends, and by the supporting structure.

The forward support IOI has on its front side, either integral or rigidly secured, a container body shell mandrel I03, having a conical forward portion I04 and a recess I05 at its juncture, this mandrel snugly fitting, at all points, within the paper shell X, as indicated in Figure 9.

Both supports I00 and I 0| are bored to receive a hollow shaft III) which extends midway into the mandrel I03; the inreaching portion of the shaft is counter-bored, and set firmly therein in a bushing III.

Secured in the end of the mandrel is a threaded bushing II2, these bushings providing spaced bearings for a slidable spindle II3, having a reduced threaded terminal H4 at its front end, and on which is secured a circular plunger die I I 5, which has a special shape including a curved face.

Fixed on the spindle I I3, within the reduced bore II1 of the mandrel, is a collar H8 and interposed between the collar and bushing III], encircling the spindle, is a helically coiled expansion spring I20 adapted to urge the spindle forward, together with the die II5, into its normally outward position.

A buffer spring I2I may be interposed between the collar I I8 and bushing H2, or, if preferred, the collar II8 may be fitted to act as a dash-pot I I9 (see Figure 11) to cushion the action of the spindle II3, preventing undue violence.

Fixed on the inner extending end of the spindle I I3 is a latch collar I24 to co-operate with a detent latch I25, pivoted in a recess in the hollow shaft IIO, on a pin I26, and urged into operative position by a spring I21, these elements acting to retain the spindle and die H5 in retracted position until the container is ejected, as in Figure 10, as later described.

slid-ably mounted on the guide bars I02 is a cross head I30 having a projecting stud I3I, flattened at opposite sides of its head to engage a cam actuator, indicated at Z, but which constitutes no part of the present disclosure.

The reduced, through reaching point I32 of the 4 stud, as the cross head moves forwardly, makes contact with the rear, lever-like portion of the detent latch I 25, releasing the collar I24, permitting the spindle II3 to advance to its normal outer position after the container is partly removed from the mandrel I03.

The cross head I30 is further provided with a spring pressed detent I33, normally seated in a recess I34 formed in the rear support I00.

Oppositely extending lateral arms I35, on the cross head I30, receive the rear ends of ejector rods I36, which are adjustably secured by nuts I31; the forward portions of the rods are guided in openings in the front support I III, and are secured in an ejector ring I38, slidable on the mandrel I03 to displace a container shell.

In operation, a container is placed upon the mandrel I03, when in a position offset away from axial alignment with the spinning head, at which time the plunger die I I 5 is in position away from the end of the mandrel and the ejector ring I38 is toward the rear end of the mandrel to clear the oncoming container.

The mandrel assembly is then moved into axial alignment with the spinner head, and the head, with its associated parts, is caused to move slowly forward to meet the edge of the container X by means of the cam 25 and lever 21.

The differential motions of the sleeve 44 and spindle 55, by action of the lever 21, with its differently located pins 31 and 64, cause the spin- During the-first stage dle 55 to travel a .somewhat greater distance than the sleeve 44-. distance is-substantially-uniform in its increase in relation between the sleeve andspindle during the forward stroke of the spinner assemblyi.- By" thisdifferential mo-' tion, the links 85, connecting' the spider 50 and curl forming elements, cause a substantially uniform expansion of the efiective working diameter-of the curl forming grbovesBIQina manner to 'follow a uniform relation to the increasing diameter of the taper wall of the container during spinning action as the head 10 'is' advanced.

of the spinning, from the instant the curl "forming grooves -8I contact the edge oi'the container body wall X until it is advanced somewhat further than indicated in Figure 6, the outer portions and parts of the throat of the curl forming grooves act to start the curling'of the container wall inwardly and the segmental flanges II and ledges I2 co-act to limitedly Cllll the container wall inwardly and.

rearwardly in a relatively close formation.

After the curl forming grooves 8| have been expanded, due to their advancement, so that the inner portion of the grooves BI have passed outwardly, beyond the range of the ledges I2, the curl, which has then become partly recurled, is fully controlled by the grooves 8| to the end of its advancement, as in Figure 7.

After the spinner head is advanced slightlybeyond the point of contact with the container wall, the stud 92 in the free turning thrust bearing 90 strikes the end H4 of the plunger die shaft H3, as shown in Figures 6 and '7. From this point on to the completion of the curling, the spring I20 holds the plunger die in firm relation to the curl forming grooves 8|, thereby to cause complete recurling in multifold form as shown.

When the curl is completed, the plunger die I I is locked in that position by the latch I25 and. latch collar I24, on the rear end of the spindle H3. The spinner head assembly is then quickly returned to its initial position, whereupon the mandrel assembly may be moved out of axial alignment with the spinner head for the purpose of ejecting the spun container body.

While in this position, the cross head I30 is moved toward the arbor by the stud I3I due to means not described. This motion of the cross head transmits an endwise forward motion of to rotate said aligned with said mandrel, means head, positive means to advance and retract said head, I a series of spinner elements movably mounted in said head to contact the container mouth wall edge; and lever means to move said elements in exact proportion to the inclination of the taper of the container as saidhead is advanced.

2. In an expansible spinner mechanism for the wall edges of conical paper containers, a fixed mandrel on which a container shell is held, a spinner head in register with said mandrel'and having means for rotation, means to advance said head, a series of non-rotative spinner elements movable'insaid headto contact the open end of a container, and means'tomovesaid elements outwardly in direct conformity with the constantly increasing taper of the conical container as'said head is-advanced; a

3. An expansible spinner mechanism comprising a frame, a slide mounted thereon, a sleeve journalled in said slide, means for rotating said sleeve, a spindle slidable in said sleeve and rotatable therewith, a spinner head on said spindle, spinner elements pivoted in said head, a spider on said sleeve, and a single means common to said slide and spindle whereby both are moved longitudinally, said means moving the spindle in excess of the movement of said slide, and proportionately thereto.

4. An expansible spinner mechanism comprising a frame, a slide mounted thereon, a sleeve journalled in said slide, means for rotating said sleeve, 2. spindle slidable in said sleeve and rotatable therewith, a spider on said sleeve, a spinner head on said spindle, spinner elements pivoted in the ejector ring I38, by means of the rods I36 to push the spun container body from off the mandrel. During the ejecting motion, a, part of the cross head I30 passes over the rear curved extension of the latch I25, thus releasing the plunger die H5 to be returned by the spring I20 to its outer position, after the container is at least partly ejected from the mandrel.

After the ejector device is returned to its rearward position, the mandrel assembly is moved to a position to receive a new container shell, as previously described, whereupon the process may be repeated.

As changes of construction could be made within the scope of the invention, it is intended that all matter contained in the foregoing description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Having thus described the invention, what is claimed as new and desired to secure by Letters Patent is:

1. In mechanism for incurling the wall edges of conical paper containers, in combination with a mandrel for holding a container, a spinner head said head, links connecting said spider and spinner elements, a cam actuated lever pivoted on said frame, said lever extending into the axial plane of said spindle, a rigid connection between the end of said lever and spindle, said connection including an anti-friction bearing in which said spindle rotates and an adjustable connection between said slide and lever at a point nearer its fulcrum.

. 5. An expansible spinner mechanism comprising a frame, a slide mounted thereon, a sleeve journalled in said slide, a spindle slidable in said sleeve and rotatable therewith, a spinner head on said spindle, a plurality of frictional contact spinners pivoted in said head, means to move said spinners outwardly in direct ratio tothe advancement of said head, means for rotating said sleeve, means to adjust the relative positional movement of saidslide and spindle, a cam actuated lever pivoted on said frame, said lever extending into the axial plane of said spindle, a rigid connection between the end of said lever and spindle, said connection including an antifriction bearing in which said spindle rotates, and a length adjustable connection between said lithe! at a point nearer its fulcrum and said s 1 e.

6. In spinner mechanism for taper container wall edge-s in combination, a slidable head, a sleeve revoluble therein and a drive means therefor, a spindle slidable in said sleeve, a cam actuated lever pivoted at one end and connected at different points in its length to said head and spindle respectively, a series of radial former elements movably carried by said spindle, and. connections between said elements and sleeve whereby the elements are moved conformably with the motion of said lever into constantly changing distances relative to the axis of said spindle.

7. In a spinner mechanism for taper container Wall edges in combination, a mandrel to retain a container, a slidable die in said mandrel to support the container mouth While being spun,

means to retain said die when retracted, a crosshead controlling the movement of said die, a ring connected to said cross-head to eject a container from said mandrel, a curling device alined with said mandrel, said device slidable linearly, means to rotate said device, a plurality of movable spinwhen retracted, a cross head, means on said cross head to release said detent, a container ejector ring slidable on said mandrel by said cross head, a series of rotative spinners axially alined with said mandrel, means to advance and retract said spinners, and means to vary the operative radius of said spinners when-advancing in direct ratio to the taper of the container.

9. In a mechanism for incurling the Wall edge of tapered paper containers, a mandrel to receive a container, supports for said mandrel, a cross head carried by said supports, a container ejector ring movable on said mandrel by said cross head, a slidableand rotatable head mounted in registration with said mandrel, expansible spinner elements pivoted in said head, and means to expand said elements as said head advances to an extent equal with the taper of the container.

LYDIA B. KOCH. IRVING F. MANDELL. 

